CN204383030U - Blackboard eraser - Google Patents
Blackboard eraser Download PDFInfo
- Publication number
- CN204383030U CN204383030U CN201420847645.4U CN201420847645U CN204383030U CN 204383030 U CN204383030 U CN 204383030U CN 201420847645 U CN201420847645 U CN 201420847645U CN 204383030 U CN204383030 U CN 204383030U
- Authority
- CN
- China
- Prior art keywords
- blackboard eraser
- blackboard
- expansion link
- hole
- eraser body
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Drawing Aids And Blackboards (AREA)
Abstract
The utility model relates to a kind of blackboard eraser, belongs to realia field.A kind of blackboard eraser, comprise blackboard eraser body (1), the top of described blackboard eraser body (1) is provided with stretch cord (2), and bottom is provided with expansion link (5).The stretch cord at blackboard eraser body top is used for both sides blackboard eraser being connected in blackboard, prevents blackboard eraser from losing because leaving about; Expansion link bottom blackboard eraser body can allow sawed-off student also can clip the first half of blackboard, the not used time, collapsible enter in blackboard eraser, do not affect the normal use of blackboard eraser.
Description
Technical field
The utility model belongs to realia field, particularly a kind of blackboard eraser.
Background technology
When blackboard eraser for student erases the board, often there will be and wipe less than the situation on blackboard top, especially some lower students, due to shorter, directly can't reach the first half of blackboard with hand-held blackboard eraser.
Utility model content
The purpose of this utility model is for the problems referred to above, provide a kind of blackboard eraser, there is a telescopic support bar, sawed-off student can be made also to clip the first half of blackboard, and can be fixed on blackboard limit, the situation preventing blackboard eraser from losing because leaving about occurs.
The purpose of this utility model is achieved in that
A kind of blackboard eraser, comprise blackboard eraser body, it is characterized in that, the top of described blackboard eraser body is provided with stretch cord, and bottom is provided with expansion link.
Wherein, the top of described blackboard eraser body is provided with annulus, and described annulus is have stretch cord.
Wherein, the bottom of described blackboard eraser body has through hole, and described expansion link is fixed on the center of blackboard eraser body inside and stretches out in through hole.
Wherein, the end that described expansion link stretches out through hole is radially provided with a circle bulge loop, and the external diameter of described bulge loop is greater than the diameter of through hole.
The beneficial effects of the utility model are: the stretch cord at blackboard eraser body top is used for both sides blackboard eraser being connected in blackboard, prevents blackboard eraser from losing because leaving about; Expansion link bottom blackboard eraser body can allow sawed-off student also can clip the first half of blackboard, the not used time, collapsible enter in blackboard eraser, do not affect the normal use of blackboard eraser.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the schematic diagram of the utility model at expansion link contraction state.
Fig. 3 is the sectional view of Fig. 2.
Fig. 4 is embodiment schematic diagram of the present utility model.
Detailed description of the invention
Below in conjunction with specific embodiments and the drawings, set forth the utility model further.
As shown in Figure 1-Figure 3, a kind of blackboard eraser, the top of blackboard eraser body 1 is provided with annulus 2, annulus 2 is have stretch cord 1, and for blackboard eraser body 1 being fixed on the both sides of blackboard, when erasing the board by blackboard eraser body 1, stretch cord 1 can suitably stretch.
The bottom of blackboard eraser body 1 has through hole 6, and the center of blackboard eraser body 1 inside is fixed with expansion link 4, and this expansion link 4 stretches out in through hole 6.The end that expansion link 4 stretches out through hole 6 is radially provided with a circle bulge loop 5, and the external diameter of this bulge loop 5 is greater than the diameter of through hole 6.Due to the existence of bulge loop 5, when can guarantee that expansion link 4 shrinks in blackboard eraser body 1, it is outside that bulge loop 5 is placed in through hole 6.When expansion link 4 pulls out by needs, only need pinch bulge loop 5, just can easily expansion link 4 be pulled out.
During actual use, usually the utility model blackboard eraser is fixed on the both sides of blackboard respectively by stretch cord 1, as shown in Figure 4.Blackboard eraser, when nature, is suspended from the middle upper/lower positions of blackboard, specifically can adjust according to the hanging position of height situation to blackboard eraser of student, can take be advisable to make all students.For the student that some are shorter, after taking blackboard eraser, bulge loop 5 can be pinched expansion link 4 is pulled out, then hold on the bulge loop 5 of expansion link 4, just can clip the first half of blackboard easily.After being finished, then expansion link 4 is retracted in blackboard eraser, only stays bulge loop 5 to be exposed.Finally under the effect of stretch cord 1, get back to initial position.
This blackboard eraser can be fixed on the both sides of blackboard, prevents because student or teacher leave about conveniently and lose, and a short student can be made also can easily to clip the first half of blackboard.
Claims (4)
1. a blackboard eraser, comprises blackboard eraser body (1), it is characterized in that, the top of described blackboard eraser body (1) is provided with stretch cord (2), and bottom is provided with expansion link (5).
2. blackboard eraser according to claim 1, is characterized in that, the top of described blackboard eraser body (1) is provided with annulus (3), and there is stretch cord (2) in the upper system of described annulus (3).
3. blackboard eraser according to claim 1, it is characterized in that, the bottom of described blackboard eraser body (1) has through hole (7), and described expansion link (6) is fixed on the inner center of blackboard eraser body (1) and stretches out in through hole (7).
4. blackboard eraser according to claim 3, it is characterized in that, the end that described expansion link (5) stretches out through hole (7) is radially provided with a circle bulge loop (6), and the external diameter of described bulge loop (6) is greater than the diameter of through hole (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420847645.4U CN204383030U (en) | 2014-12-23 | 2014-12-23 | Blackboard eraser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420847645.4U CN204383030U (en) | 2014-12-23 | 2014-12-23 | Blackboard eraser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204383030U true CN204383030U (en) | 2015-06-10 |
Family
ID=53355779
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420847645.4U Expired - Fee Related CN204383030U (en) | 2014-12-23 | 2014-12-23 | Blackboard eraser |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204383030U (en) |
-
2014
- 2014-12-23 CN CN201420847645.4U patent/CN204383030U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204383030U (en) | Blackboard eraser | |
| CN204764156U (en) | Hotel is desk for bed | |
| CN104512169A (en) | Extensible compass | |
| CN204634000U (en) | A kind of earphone winder | |
| CN204169329U (en) | Studying gesture apparatus for correcting | |
| CN203093501U (en) | Teaching compasses | |
| CN203930647U (en) | Multipurpose computer cabinet | |
| CN204889151U (en) | Novel desk | |
| CN204617290U (en) | The equipment that anti-umbrella cloth comes off from support | |
| CN204191656U (en) | A kind of net that stretches tight of climbing the mountain | |
| CN204132708U (en) | A kind of leg drawing desk in | |
| CN203597563U (en) | Multifunctional desk | |
| CN203195359U (en) | Retractable clothes rack | |
| CN204916601U (en) | Support is placed to collapsible knob insulator | |
| CN204106689U (en) | Flexible drip stand | |
| CN202619187U (en) | Water cup capable of being suspended on guardrail of dormitory bed | |
| CN203902013U (en) | Finger reader | |
| CN204435556U (en) | A kind of HIGHER ALTITUDE TEST FACILITY holder connection device of Fast Installation | |
| CN201721204U (en) | Telescopic compasses | |
| CN204889128U (en) | Little desk of foldable bed with stealthy pen container | |
| CN205997000U (en) | Portable take book bar | |
| CN207041114U (en) | A kind of crutch provided with Telescopic ground writing pen | |
| CN203483062U (en) | Portable folding platform for economics teaching | |
| CN203978252U (en) | One facilitates bead curtain | |
| CN204611256U (en) | A kind of tripod with slide device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150610 Termination date: 20151223 |
|
| EXPY | Termination of patent right or utility model |